<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<script>
		function setDate(uname,age,sex) {
			this.uname = uname;
			this.age = age;
			this.sex = sex;
			this.sing = function() {
				console.log('动画');
			}
			
		}
		var sew =new setDate('小明',18,'男');
		console.log(setDate.prototype);
		console.log(sew.__proto__);
		console.log(Object.prototype)
		console.log(setDate.prototype.constructor);
	</script>
	<body>
	</body>
</html>
